Abstract
Simulations of extensive air showers (EAS) for several models of ultra-high energy interactions, involving isobar production and Psi production, are carried out with energy dependent cross sections. The sensitivity of the maximum depth to power or logarithmic multiplicity laws for secondaries and to scaling models is discussed together with the effect of the cross section and the chemical composition of the primary cosmic component. Agreement with experimental data on the maximum depth is obtained without requiring such an important multiple production as E12/.
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